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82 lines
2.9 KiB
PHP
82 lines
2.9 KiB
PHP
# ==== Purpose ====
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#
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# Waits until SHOW SLAVE STATUS has returned a specified value, or
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# until a timeout is reached.
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#
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# ==== Usage ====
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#
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# let $slave_param= Slave_SQL_Running;
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# let $slave_param_value= No;
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# source include/slave_wait_param.inc;
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#
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# Parameters:
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#
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# $slave_param, $slave_param_value
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# This macro will wait until the column of the output of SHOW SLAVE
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# STATUS named $slave_param gets the value $slave_param_value. See
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# the example above.
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#
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# $slave_param_comparison
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# By default, this file waits until $slave_param becomes equal to
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# $slave_param_value. If you want to wait until $slave_param
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# becomes *unequal* to $slave_param_value, set this parameter to the
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# string '!=', like this:
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# let $slave_param_comparison= !=;
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#
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# $slave_timeout
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# The default timeout is 5 minutes. You can change the timeout by
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# setting $slave_timeout. The unit is tenths of seconds.
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#
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# $master_connection
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# If the timeout is reached, debug info is given by calling SHOW
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# SLAVE STATUS, SHOW PROCESSLIST, and SHOW BINLOG EVENTS. Then, a
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# 'connection master' is then issued, and more debug info is given
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# by calling SHOW MASTER STATUS, SHOW PROCESSLIST, and SHOW BINLOG
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# EVENTS. If $master_connection is set, the latter three commands
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# will be issued on $master_connection instead of on the host named
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# 'master'. See also show_rpl_debug_info.inc
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#
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# $slave_error_message
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# If set, this is printed when a timeout occurs. This is primarily
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# intended to be used by other wait_for_slave_* macros, to indicate
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# what the purpose of the wait was. (A very similar error message is
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# given by default, but the wait_for_slave_* macros use this to give
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# an error message identical to that in previous versions, so that
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# errors are easier searchable in the pushbuild history.)
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let $_slave_timeout_counter= $slave_timeout;
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if (!$_slave_timeout_counter)
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{
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let $_slave_timeout_counter= 3000;
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}
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let $_slave_param_comparison= $slave_param_comparison;
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if (!$_slave_param_comparison)
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{
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let $_slave_param_comparison= =;
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}
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let $_show_slave_status_value= query_get_value("SHOW SLAVE STATUS", $slave_param, 1);
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while (`SELECT NOT('$_show_slave_status_value' $_slave_param_comparison '$slave_param_value') AND $_slave_timeout_counter > 0`)
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{
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dec $_slave_timeout_counter;
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if ($_slave_timeout_counter)
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{
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sleep 0.1;
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let $_show_slave_status_value= query_get_value("SHOW SLAVE STATUS", $slave_param, 1);
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}
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}
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# This has to be outside the loop until BUG#41913 has been fixed
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if (!$_slave_timeout_counter)
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{
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--echo **** ERROR: timeout after $slave_timeout seconds while waiting for slave parameter $slave_param $_slave_param_comparison $slave_param_value ****
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if ($slave_error_message)
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{
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--echo Message: $slave_error_message
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}
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--echo Current connection is '$CURRENT_CONNECTION'
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echo Note: the following output may have changed since the failure was detected;
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source include/show_rpl_debug_info.inc;
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die;
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}
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